TLC5970RHPR datasheet(21/48 Pages) TI

21 / 48 page

(mA)

OUTn

OLCMax

(mA)=

DCn

127d

TLC5970

www.ti.com

SBVS140 – MARCH 2010

Equation 2 determines each output (OUTn) sink current:

Where:

IOLCMax = the maximum channel current for each channel determined by RIREFn

DCn = the decimal dot correction value for each OUTn in the DC latch (DCn = 0d to 127d)

BC = the decimal brightness control value in the brightness control latch (BC = 0d to 127d)

(2)

DC, BC, and function current control data are shown in Table 2, Table 3, and Table 4, respectively.

Table 2. DC Data versus Current Ratio and Set Current Value

SET CURRENT

RATIO TO

DC DATA

BC DATA

MAXIMUM

150 mA IOLCMax

10 mA IOLCMax

(Binary)

(Decimal)

(Hex)

CURRENT (%)

(mA, Typical)

000 0000

000 0001

0.8

1.18

0.08

000 0010

1.6

2.36

0.16

—

111 1101

125

98.4

147.64

9.84

111 1110

126

99.2

148.82

9.92

111 1111

127

100.0

150.00

10.00

Table 3. BC Data versus Current Ratio and Set Current Value

SET CURRENT

RATIO TO

BC DATA

DC DATA

MAXIMUM

150 mA IOLCMax

10 mA IOLCMax

(Binary)

(Decimal)

(Hex)

CURRENT (%)

(mA, Typical)

000 0000

000 0001

0.8

1.18

0.08

000 0010

1.6

2.36

0.16

—

111 1101

125

98.4

147.64

9.84

111 1110

126

99.2

148.82

9.92

111 1111

127

100.0

150.00

10.00

Table 4. DC and BC Data versus Current Ratio and Set Current Value

SET CURRENT RATIO

BC DATA

DC DATA

TO MAXIMUM CURRENT

150 mA IOLCMax

10 mA IOLCMax

(Hex)

(%)

(mA, Typical)

0.01

0.04

—

96.88

145.31

9.69

98.43

147.65

9.84

100.0

150.00

10.00

Submit Documentation Feedback

Product Folder Link(s): TLC5970

TLC5970RHPR Datasheet(PDF) 21 Page - Texas Instruments

TLC5970RHPR Datasheet(HTML) 21 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

Datasheet Download

Link URL